What a neat idea that didn’t pan out. The 7.62 SLAP round was developed my the USMC and made by Winchester Cartridge Company to be a better AP round. The 7.62mm M948 round uses a 55 grain tungsten .22 core in a 30 caliber sabot for a round that breaks 4,000 I have heard.
The ammo was used in the first gulf war and scrubbed not long after. Turns out the sabot would come apart and the core would blast out the side of M60 barrels. Reportedly, it is not safe to use with any barrel that has a muzzle device of any kind. I got this bunch from Brady a couple weeks ago and have been selling it off.
Scattered Shots 
There was still a lot of that stuff in Afghanistan in ’06.
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I never got a chance to use 7.62 SLAP overseas, but we used a lot of 50 cal SLAP on the 2007 tour in our M2’s. The 50 cal SLAP is murder on the M2 barrels. We had to check each barrel (3 bbls for each of our M2’s) for the stamped part number, and it had to end with the numbers 131. Those were the hard lined barrels that were compatible with SLAP. Two of our older barrels had a different part number stamped, those had to be marked so we didn’t fire SLAP, since they didn’t have hard liners and SLAP would have worn them out in short order.
I was always curious about putting a couple SLAP rounds through the soft barrels on our M107 Barrett’s, but never did try it. I’m sure our SARIT armorers would have flipped out..even moreso if the M107 failed HS, ME, TE or straightness gages. We primarily used RAUFOSS rounds in the Barrett
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